/* ============================================================
   PlantGuard Design System — Page Layout (3D PREMIUM EDITION)
   Page-specific structural styles: landing, main header, chat
   window, diagnosis grid, community, history, weather, library.
   ============================================================ */

/* ============== PAGE HEADER (deep-green gradient band) ============== */
.main-header {
  background: var(--gradient-header-band);
  padding: var(--space-10) var(--space-6) var(--space-12);
  text-align: center;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
  margin: 0 var(--space-3);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.12),
    0 12px 32px rgba(10, 36, 23, 0.25);
}
.main-header::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(400px 200px at 15% 20%, rgba(163, 230, 53, 0.16), transparent 60%),
    radial-gradient(500px 260px at 85% 80%, rgba(79, 168, 122, 0.20), transparent 60%);
  pointer-events: none;
}
.main-header::after {
  /* decorative giant leaf watermark */
  content: '🌿';
  position: absolute;
  right: 4%; top: 10%;
  font-size: 7rem;
  opacity: 0.10;
  transform: rotate(18deg);
  filter: blur(1px);
  pointer-events: none;
}
.main-header-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  color: white;
  margin: 0;
  position: relative;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
  letter-spacing: -0.02em;
}
.main-header-subtitle {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.88);
  margin-top: var(--space-2);
  position: relative;
}

.page-container { max-width: var(--content-max-width); margin: 0 auto; padding: var(--space-6) var(--space-6) var(--space-16); }
.page-back {
  display: inline-flex; align-items: center; gap: var(--space-2);
  color: var(--color-brand-600); font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm); margin-bottom: var(--space-4);
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--surface-card-border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}
.page-back:hover { transform: translateX(-3px); box-shadow: var(--shadow-md); color: var(--color-brand-700); }

/* ============== LANDING PAGE ============== */
.hero {
  padding: var(--space-16) var(--space-6) var(--space-20);
  background: var(--gradient-hero-mesh);
  position: relative;
  overflow: hidden;
}
.hero-inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-12);
  position: relative;
}
.hero-text { flex: 1.1; min-width: 300px; }
.hero-visual { flex: 1; min-width: 260px; text-align: center; position: relative; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-brand-700);
  margin-bottom: var(--space-4);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-brand-200);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
}
.hero-eyebrow .pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-accent-500);
  box-shadow: 0 0 0 0 rgba(132, 204, 22, 0.6);
  animation: pg-pulse-dot 2s infinite;
}
@keyframes pg-pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(132, 204, 22, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(132, 204, 22, 0); }
  100% { box-shadow: 0 0 0 0 rgba(132, 204, 22, 0); }
}
.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
  color: var(--color-brand-950);
}
.hero-title .gradient-text {
  background: linear-gradient(120deg, var(--color-brand-600), var(--color-accent-600));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-subtitle {
  font-size: var(--font-size-md);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
  max-width: 520px;
}
.hero-actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.hero-actions .btn { padding: var(--space-4) var(--space-8); font-size: var(--font-size-md); border-radius: var(--radius-xl); }

/* 3D floating hero scene */
.hero-scene {
  position: relative;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  perspective: 1200px;
}
.hero-leaf-main {
  width: 100%;
  filter: drop-shadow(0 30px 50px rgba(24, 89, 57, 0.30));
  animation: pg-float-main 6s ease-in-out infinite;
  transform-style: preserve-3d;
}
@keyframes pg-float-main {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-18px) rotate(2deg); }
}
.hero-float-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-float);
  font-size: var(--font-size-xs);
  text-align: left;
  z-index: 2;
}
.hero-float-card.card-a { top: 6%; left: -6%; animation: pg-float-a 5s ease-in-out infinite; }
.hero-float-card.card-b { bottom: 10%; right: -4%; animation: pg-float-b 7s ease-in-out infinite; }
@keyframes pg-float-a { 0%,100% { transform: translateY(0) rotate(-2deg); } 50% { transform: translateY(-12px) rotate(1deg); } }
@keyframes pg-float-b { 0%,100% { transform: translateY(0) rotate(2deg); } 50% { transform: translateY(-14px) rotate(-1deg); } }
.hero-float-card .fc-title { font-weight: var(--font-weight-bold); color: var(--color-brand-800); font-size: var(--font-size-sm); }
.hero-float-card .fc-sub { color: var(--color-neutral-500); }

.how-it-works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
  max-width: var(--content-max-width);
  margin: var(--space-8) auto 0;
}
.how-step {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-lift), box-shadow var(--transition-base);
  position: relative;
}
.how-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.how-step .how-step-num {
  width: 52px; height: 52px;
  border-radius: 18px;
  background: var(--gradient-icon-tile);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--font-weight-extrabold);
  font-size: var(--font-size-lg);
  margin: 0 auto var(--space-3);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.35),
    inset 0 -3px 6px rgba(10,36,23,0.3),
    0 8px 18px rgba(24,89,57,0.35);
}

.feature-card { text-align: left; }
.feature-card-icon {
  width: 56px; height: 56px;
  border-radius: 18px;
  background: var(--gradient-icon-tile);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.35),
    inset 0 -3px 6px rgba(10,36,23,0.3),
    0 8px 18px rgba(24,89,57,0.35);
  transition: transform var(--transition-lift);
}
.feature-card:hover .feature-card-icon { transform: scale(1.1) rotate(-6deg); }
.feature-card-title { font-size: var(--font-size-md); margin-bottom: var(--space-2); position: relative; }
.feature-card-description { font-size: var(--font-size-sm); color: var(--color-neutral-500); margin: 0; position: relative; }

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-5);
  max-width: var(--content-max-width);
  margin: 0 auto;
}
.trust-item {
  display: flex; gap: var(--space-3); align-items: flex-start;
  background: rgba(255,255,255,0.65);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255,255,255,0.8);
}
.trust-item > i {
  color: white;
  font-size: var(--font-size-md);
  width: 40px; height: 40px; flex-shrink: 0;
  border-radius: 12px;
  background: var(--gradient-icon-tile);
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), 0 4px 10px rgba(24,89,57,0.3);
}

.faq-item {
  border: 1px solid var(--surface-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-3);
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item summary {
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  font-size: var(--font-size-base);
}
.faq-item p { margin-top: var(--space-2); color: var(--color-neutral-600); font-size: var(--font-size-sm); margin-bottom: 0; }

/* ============== FOOTER ============== */
.site-footer {
  background: var(--gradient-brand-deep);
  color: rgba(255,255,255,0.85);
  padding: var(--space-10) var(--space-6);
  margin: var(--space-12) var(--space-3) var(--space-3);
  border-radius: var(--radius-2xl);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 20px 50px rgba(10,36,23,0.25);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(500px 200px at 50% 0%, rgba(163,230,53,0.10), transparent 60%);
  pointer-events: none;
}
.footer-inner { max-width: var(--content-max-width); margin: 0 auto; text-align: center; position: relative; }
.footer-brand { color: white; font-weight: var(--font-weight-bold); font-size: var(--font-size-md); margin-bottom: var(--space-4); }
.footer-links { display: flex; justify-content: center; gap: var(--space-6); flex-wrap: wrap; margin-bottom: var(--space-4); }
.footer-links button { color: rgba(255,255,255,0.85); background: none; border: none; font-size: var(--font-size-sm); }
.footer-links button:hover { color: white; text-decoration: underline; }
.footer-credit { font-size: var(--font-size-xs); opacity: 0.7; border-top: 1px solid rgba(255,255,255,0.15); padding-top: var(--space-4); }

/* ============== DASHBOARD ============== */
.dashboard-section-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-neutral-500);
  font-weight: var(--font-weight-bold);
  margin: var(--space-8) 0 var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.dashboard-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-neutral-300), transparent);
}
.dashboard-primary-action {
  display: flex;
  gap: var(--space-6);
  align-items: center;
  background: var(--gradient-header-band);
  color: white;
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.15),
    0 16px 40px rgba(10, 36, 23, 0.35),
    0 40px 90px rgba(10, 36, 23, 0.20);
  border: 1px solid rgba(255,255,255,0.12);
}
.dashboard-primary-action::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(400px 220px at 12% 20%, rgba(163,230,53,0.22), transparent 60%),
    radial-gradient(500px 280px at 90% 90%, rgba(79,168,122,0.25), transparent 60%);
  pointer-events: none;
}
.dashboard-primary-action::after {
  content: '🌱';
  position: absolute;
  right: 5%; bottom: -10%;
  font-size: 8rem;
  opacity: 0.12;
  transform: rotate(-14deg);
  pointer-events: none;
}
.dashboard-primary-action .cta-icon {
  font-size: 3.2rem;
  color: var(--color-accent-300);
  filter: drop-shadow(0 6px 14px rgba(163,230,53,0.4));
  position: relative;
  z-index: 1;
}
.dashboard-primary-action h2 { color: white; margin-bottom: var(--space-2); position: relative; z-index: 1; text-shadow: 0 2px 10px rgba(0,0,0,0.25); }
.dashboard-primary-action p { color: rgba(255,255,255,0.88); margin-bottom: var(--space-4); position: relative; z-index: 1; }
.dashboard-primary-action .btn-primary {
  background: linear-gradient(180deg, #ffffff 0%, #e8f5ec 100%);
  color: var(--color-brand-700);
  text-shadow: none;
  position: relative;
  z-index: 1;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -2px 0 rgba(24,89,57,0.15),
    0 6px 16px rgba(0,0,0,0.25),
    0 14px 32px rgba(0,0,0,0.18);
}
.dashboard-primary-action .btn-primary:hover {
  background: white;
  transform: translateY(-2px);
}
.dashboard-primary-action > div { position: relative; z-index: 1; }

.risk-widget-inline { margin-top: var(--space-6); }

/* ============== DIAGNOSIS ============== */
.diag-layout { display: grid; grid-template-columns: 1fr 1.3fr; gap: var(--space-6); align-items: start; }
.upload-box {
  border: 2.5px dashed var(--color-brand-400);
  border-radius: var(--radius-2xl);
  padding: var(--space-10) var(--space-4);
  text-align: center;
  background: linear-gradient(180deg, rgba(240,249,244,0.9), rgba(219,240,227,0.7));
  backdrop-filter: blur(8px);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-inset), var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.upload-box::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(300px 160px at 50% 0%, rgba(163,230,53,0.18), transparent 65%);
  pointer-events: none;
}
.upload-box:hover {
  background: linear-gradient(180deg, rgba(219,240,227,0.95), rgba(182,225,200,0.7));
  border-color: var(--color-brand-600);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.upload-box.drag-over {
  border-color: var(--color-accent-500);
  background: linear-gradient(180deg, rgba(190,242,100,0.25), rgba(219,240,227,0.8));
  transform: scale(1.015);
  box-shadow: var(--shadow-lg);
}
.upload-box i.upload-icon {
  font-size: 3rem;
  background: var(--gradient-icon-tile);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 6px 12px rgba(24,89,57,0.3));
}
.upload-preview {
  margin-top: var(--space-3);
  border-radius: var(--radius-lg);
  max-height: 280px;
  margin-left: auto; margin-right: auto;
  box-shadow: var(--shadow-lg);
  border: 3px solid white;
}

.diag-result-card { display: flex; flex-direction: column; gap: var(--space-4); }
.diag-result-heading { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; }

.secondary-possibilities { display: flex; flex-direction: column; gap: var(--space-2); }
.secondary-possibility-row {
  display: flex; align-items: center; justify-content: space-between;
  font-size: var(--font-size-sm);
  padding: var(--space-2) var(--space-4);
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--surface-card-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* ============== CHAT ============== */
.chat-window {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.9);
  outline: 1px solid var(--surface-card-border);
  outline-offset: -1px;
  border-radius: var(--radius-2xl);
  height: 62vh;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.chat-messages {
  flex: 1; overflow-y: auto; padding: var(--space-5);
  display: flex; flex-direction: column; gap: var(--space-3);
  background:
    radial-gradient(300px 200px at 10% 0%, rgba(163,230,53,0.08), transparent 60%),
    radial-gradient(300px 200px at 90% 100%, rgba(79,168,122,0.08), transparent 60%);
}
.chat-bubble {
  max-width: 80%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  animation: pg-bubble-in 240ms cubic-bezier(0.22, 0.9, 0.3, 1.15);
}
@keyframes pg-bubble-in { from { opacity: 0; transform: translateY(10px) scale(0.97); } to { opacity: 1; transform: none; } }
.chat-bubble.user {
  align-self: flex-end;
  background: var(--gradient-brand-btn);
  color: white;
  border-bottom-right-radius: 6px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.25),
    0 4px 12px rgba(24,89,57,0.35),
    0 10px 26px rgba(24,89,57,0.20);
}
.chat-bubble.assistant {
  align-self: flex-start;
  background: rgba(255,255,255,0.95);
  color: var(--color-neutral-800);
  border-bottom-left-radius: 6px;
  border: 1px solid var(--surface-card-border);
  box-shadow: var(--shadow-md);
}
.chat-bubble.assistant p { margin: 0 0 var(--space-2); }
.chat-bubble.assistant ul { margin: var(--space-2) 0; }
.chat-bubble-meta { font-size: var(--font-size-xs); color: var(--color-neutral-400); margin-top: var(--space-1); display: flex; gap: var(--space-2); align-items: center; }
.chat-tool-indicator { font-size: var(--font-size-xs); color: var(--color-brand-600); display: inline-flex; align-items: center; gap: var(--space-1); }
.chat-context-banner {
  background: linear-gradient(180deg, rgba(234,242,251,0.95), rgba(207,226,245,0.9));
  color: var(--color-neutral-800);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-2);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(36,100,176,0.2);
}
.chat-input-row {
  display: flex; gap: var(--space-2);
  padding: var(--space-3);
  border-top: 1px solid var(--surface-card-border);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
}
.chat-input-row input { flex: 1; }
.chat-empty { text-align: center; color: var(--color-neutral-400); margin: auto; font-size: var(--font-size-sm); }
.suggested-questions { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-3); }
.suggested-question-chip {
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(6px);
  border: 1px solid var(--color-brand-200);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-brand-700);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}
.suggested-question-chip:hover {
  background: white;
  border-color: var(--color-brand-500);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ============== COMMUNITY ============== */
.post-card { border-left: 4px solid var(--color-brand-500); }
.post-header { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-2); position: relative; }
.post-author { font-weight: var(--font-weight-semibold); color: var(--color-brand-700); font-size: var(--font-size-sm); }
.post-time { font-size: var(--font-size-xs); color: var(--color-neutral-400); }
.post-tags { display: flex; gap: var(--space-1); flex-wrap: wrap; margin: var(--space-2) 0; position: relative; }
.post-actions { display: flex; gap: var(--space-2); margin-top: var(--space-3); flex-wrap: wrap; position: relative; }
.post-actions .btn-ghost { padding: var(--space-1) var(--space-3); font-size: var(--font-size-xs); }
.comment-list { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-3); }
.comment-box {
  background: rgba(255,255,255,0.75);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  border-left: 3px solid var(--color-brand-400);
  box-shadow: var(--shadow-sm);
}
.comment-author { font-weight: var(--font-weight-semibold); color: var(--color-brand-700); font-size: var(--font-size-xs); }
.comment-text { color: var(--color-neutral-700); font-size: var(--font-size-xs); margin-top: var(--space-1); }

/* ============== WEATHER ============== */
.weather-hero {
  background: var(--gradient-header-band);
  color: white;
  border-radius: var(--radius-2xl);
  padding: var(--space-8) var(--space-6);
  position: relative;
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.15),
    0 16px 40px rgba(10,36,23,0.30);
  border: 1px solid rgba(255,255,255,0.12);
}
.weather-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(360px 200px at 12% 15%, rgba(163,230,53,0.20), transparent 60%),
    radial-gradient(420px 240px at 88% 85%, rgba(79,168,122,0.22), transparent 60%);
  pointer-events: none;
}
.weather-hero::after {
  content: '☀️';
  position: absolute;
  right: 6%; top: 12%;
  font-size: 4.5rem;
  opacity: 0.25;
  filter: drop-shadow(0 8px 16px rgba(0,0,0,0.3));
  pointer-events: none;
}
.weather-hero h2 { color: white; margin-bottom: var(--space-1); position: relative; text-shadow: 0 2px 10px rgba(0,0,0,0.25); }
.weather-hero p { position: relative; }
.weather-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px,1fr)); gap: var(--space-3); margin: var(--space-4) 0; }
.weather-metric {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-lift), box-shadow var(--transition-base);
}
.weather-metric:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.weather-metric .value { font-size: var(--font-size-xl); font-weight: var(--font-weight-extrabold); color: var(--color-brand-700); }
.weather-metric .label { font-size: var(--font-size-xs); color: var(--color-neutral-500); margin-top: var(--space-1); font-weight: var(--font-weight-medium); }
.forecast-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px,1fr)); gap: var(--space-2); }
.forecast-day {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.9);
  outline: 1px solid var(--surface-card-border);
  outline-offset: -1px;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-lift), box-shadow var(--transition-base);
}
.forecast-day:hover { transform: translateY(-4px) scale(1.03); box-shadow: var(--shadow-md); }
.forecast-day .d { font-size: var(--font-size-xs); font-weight: var(--font-weight-bold); color: var(--color-neutral-500); text-transform: uppercase; letter-spacing: 0.04em; }
.forecast-day .t { font-size: var(--font-size-md); font-weight: var(--font-weight-extrabold); color: var(--color-neutral-900); margin: var(--space-1) 0; }
.forecast-day .c { font-size: var(--font-size-xs); color: var(--color-neutral-500); }
.risk-alert-card { border-radius: var(--radius-md); padding: var(--space-4); margin-bottom: var(--space-3); }

/* ============== HISTORY ============== */
.history-toolbar {
  display: flex; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-5); align-items: flex-end;
  background: rgba(255,255,255,0.65);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.85);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}
.history-toolbar .form-group { margin-bottom: 0; flex: 1; min-width: 140px; }
.metric-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: var(--space-3); margin-bottom: var(--space-5); }
.metric-box {
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.9));
  border: 1px solid rgba(255,255,255,0.9);
  outline: 1px solid var(--surface-card-border);
  outline-offset: -1px;
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-lift);
}
.metric-box:hover { transform: translateY(-3px); }
.metric-box .num {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  background: var(--gradient-icon-tile);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.metric-box .lbl { font-size: var(--font-size-xs); color: var(--color-neutral-500); margin-top: var(--space-1); font-weight: var(--font-weight-medium); }
.history-item {
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.92));
  border: 1px solid rgba(255,255,255,0.9);
  outline: 1px solid var(--surface-card-border);
  outline-offset: -1px;
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.history-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.history-item-header { display: flex; justify-content: space-between; align-items: center; cursor: pointer; gap: var(--space-3); }
.history-item-thumb {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid white;
  box-shadow: var(--shadow-md);
}
.history-item-body { margin-top: var(--space-4); padding-top: var(--space-4); border-top: 1px solid var(--surface-card-border); display: none; }
.history-item.expanded .history-item-body { display: block; animation: pg-fade-in 200ms ease; }

/* ============== LIBRARY ============== */
.library-detail {
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.92));
  border: 1px solid rgba(255,255,255,0.9);
  outline: 1px solid var(--surface-card-border);
  outline-offset: -1px;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-top: var(--space-5);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.library-detail::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--gradient-card-sheen);
  pointer-events: none;
}
.library-search-row {
  display: flex; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-4);
  background: rgba(255,255,255,0.65);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.85);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}
.library-search-row .form-group { flex: 1; min-width: 220px; margin-bottom: 0; }

/* ============== DIAGNOSIS REPORT (print) ============== */
.report-page { max-width: 760px; margin: 0 auto; background: white; padding: var(--space-8); }
.report-header { display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 2px solid var(--color-brand-600); padding-bottom: var(--space-4); margin-bottom: var(--space-6); }
.report-disclaimer { font-size: var(--font-size-xs); color: var(--color-neutral-500); border-top: 1px solid var(--surface-card-border); padding-top: var(--space-4); margin-top: var(--space-6); }

/* ============================================================
   APP SHELL — web-app navigation (3D PREMIUM)
   Desktop: fixed left sidebar. Mobile: bottom tab bar.
   Slim sticky top bar with brand + key actions.
   ============================================================ */
:root { --sidebar-width: 248px; --topbar-height: 60px; --tabbar-height: 72px; }

/* ---- Top bar ---- */
.app-topbar {
  position: sticky;
  top: 0;
  z-index: 950;
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px) saturate(1.5);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 20px rgba(15, 30, 22, 0.08);
}
.topbar-brand {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg); font-weight: var(--font-weight-extrabold);
  color: var(--color-brand-800); border: none; background: none; cursor: pointer;
  letter-spacing: -0.02em; padding: 0;
}
.topbar-actions { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; }
.topbar-icon-btn {
  width: 38px; height: 38px; border-radius: 12px;
  border: 1px solid var(--surface-card-border);
  background: rgba(255,255,255,0.7); color: var(--color-brand-700);
  cursor: pointer; font-size: 1rem;
  box-shadow: var(--shadow-sm);
  display: inline-flex; align-items: center; justify-content: center;
  transition: all var(--transition-base);
}
.topbar-icon-btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

/* ---- Sidebar (desktop) ---- */
.app-sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width);
  z-index: 960;
  display: flex; flex-direction: column;
  padding: var(--space-5) var(--space-4);
  background: linear-gradient(180deg, #0e2a1d 0%, #123524 55%, #0c2418 100%);
  border-right: 1px solid rgba(255,255,255,0.08);
  box-shadow: inset -1px 0 0 rgba(255,255,255,0.06), 12px 0 40px rgba(10,36,23,0.25);
}
.app-sidebar::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(300px 180px at 20% 8%, rgba(163,230,53,0.14), transparent 60%),
    radial-gradient(360px 240px at 80% 90%, rgba(79,168,122,0.12), transparent 60%);
}
.sidebar-brand {
  display: flex; align-items: center; gap: var(--space-3);
  background: none; border: none; cursor: pointer;
  padding: var(--space-2) var(--space-2) var(--space-5);
  position: relative;
}
.sidebar-brand-text {
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg); font-weight: var(--font-weight-extrabold);
  color: #fff; letter-spacing: -0.02em;
}
.app-nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-1); position: relative; }
.app-nav-item {
  width: 100%;
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border: 1px solid transparent; border-radius: var(--radius-lg);
  background: none; cursor: pointer; text-align: left;
  color: rgba(255,255,255,0.72);
  font-weight: var(--font-weight-medium); font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}
.app-nav-icon {
  width: 36px; height: 36px; border-radius: 11px; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.10);
  color: #bef264; font-size: 0.95rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.10);
  transition: all var(--transition-base);
}
.app-nav-item:hover { background: rgba(255,255,255,0.06); color: #fff; transform: translateX(2px); }
.app-nav-item:hover .app-nav-icon { background: rgba(163,230,53,0.16); }
.app-nav-item.active {
  background: linear-gradient(180deg, rgba(163,230,53,0.20), rgba(163,230,53,0.08));
  border-color: rgba(163,230,53,0.35);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 6px 18px rgba(0,0,0,0.25);
}
.app-nav-item.active .app-nav-icon {
  background: var(--gradient-icon-tile);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.3), 0 4px 12px rgba(24,89,57,0.5);
}
.sidebar-footer { margin-top: auto; padding-top: var(--space-4); position: relative; border-top: 1px solid rgba(255,255,255,0.08); }
.sidebar-secondary-link {
  display: inline-flex; align-items: center; gap: var(--space-2);
  background: none; border: none; cursor: pointer;
  color: rgba(255,255,255,0.55); font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
  padding: var(--space-2);
}
.sidebar-secondary-link:hover { color: #bef264; }

/* ---- Bottom tab bar (mobile) ---- */
.app-tabbar {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0;
  z-index: 950;
  padding: var(--space-2) var(--space-2) calc(var(--space-2) + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-top: 1px solid rgba(255,255,255,0.9);
  box-shadow: 0 -8px 28px rgba(15, 30, 22, 0.12);
}
.app-tab-item {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px;
  background: none; border: none; cursor: pointer;
  color: var(--color-neutral-500);
  font-size: 10px; font-weight: var(--font-weight-medium);
  padding: var(--space-1) 0;
  border-radius: var(--radius-md);
}
.app-tab-item i { font-size: 1.15rem; }
.app-tab-item.active { color: var(--color-brand-700); }
.app-tab-item.active i {
  color: #fff;
  background: var(--gradient-icon-tile);
  width: 44px; height: 30px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 10px rgba(24,89,57,0.35);
}

/* ---- Shell offsets ---- */
@media (min-width: 1024px) {
  .page-shell { padding-left: var(--sidebar-width); }
  .app-tabbar { display: none !important; }
  .topbar-brand { display: none; }
}
@media (max-width: 1023.98px) {
  .app-sidebar { display: none; }
  .app-tabbar { display: flex; }
  .page-shell { padding-bottom: calc(var(--tabbar-height) + env(safe-area-inset-bottom)); }
  /* lift the chat widget above the tab bar on mobile */
  #pg-chat-widget-root { bottom: calc(var(--tabbar-height) + var(--space-4)); right: var(--space-4); }
  .topbar-cta-text { display: none; }
}